Speed-indicator.



G. A. JACQUES. SPEED INDICATOR. APPLICATION FILED JULY17, 1907.

Patented Mar.2,1 909.

' $HEETSS E T J 1 7%.5,

24 211 WITNESSES INVENTOR ATTOKNE Y5 C. A. JACQUES.

SPEED INDICATOR.

APPLICATION FILED JULY 17, 1907.

914,145 Patented Mar. 2, 1909.

2 SHIJBTSSHEET 2.

INVENTOR WITNESSES MM p6 6M ATTORNEYS UNITED s Atr s rA Ntr, onnrcn.

CHARLES A. JACQUES, or NEW YORK, NXYL, ASSIGNOR 'ro VEILOOHRONE COMPANY, OF'NEW YORK, N. Y., A CORPORATION OFNEW YORK.

sPnnn-mnrcnron.

Specification of, Letters Patent.

- Patented March 2', 1909.

Ap'plieatinn'flhd July 17, 1907. sum No. 384,188.

To all whom it concern: I i

acitizen of the United States of America,"residing in the borough of'Manhattan, in the city, county, and State of-New York, have. invented certain new and useful Im rovements in Speed-Indicators, of-which t e ,following is a specification.

This invention relatesto speed .indic'ators and particularly to automatically recording indicators. I

The object of the invention is to provide an indicator in which, in connection" with a drum revolved at a constant known speed, is arranged a recorder actuated from a moving part of the vehicle, the speed of which is to be measured. The apparatus is arranged to serve the purpose of a clock also, the recorder arm acting as a minute. hand. In this connection the drum surface is regularly divided and lotted to indicate hours and minutes so that y the movement of the recorder arm and the drum surface, not only the speed at which the vehicle is moving 'may be elevation of the indicator, partly broken,

away: Fig. 2 is a front elevation of the same: Fig. 3 is a portion of the drumsurface to i show the plottin%of the same, and the record made thereon igs. 4- and;5'are side elevations of an auto obile showing different methods-of actuatin the recorder arm. Fig. 6 is a side elevation of the indicator from the opposite end from Fig. 1. -Fig. 7 is a erspective view'of the recorder arm, and Flg. 8- is a plan of the same artly broken away.'

Referring to the that I provide a hollow drum A mounted in end plates 10 and rotated at constant speed by any suitable mechanism, such as clock mechanism which may be conveniently arranged within the drum and op'erativelyconnected thereto.

At one end of thedrum I secure a toothed wheel 12 which meshes with a toothed Wheel 13 on the threaded shaft 14, 'ournaled in the end plates 10. The axis of t shaft or feed screw is parallel to that of the drum, and its purpose is to feed the carrier 15 mounted thereon, with the recorder arm 16 andpoint 17 in a direction longitudinal of the drum. For this purpose the carrier is provided with a segment 18 threaded to mesh with the Be it known that I, CHARLES A. Jacques,

rawings itwill be 'seen' thread 0? the feed screw, with which it 'is in contact during the operation of the apparatus. The segment may be withdrawn from its gear with the feed screw in any suitable manner as by pulling the same-,xagainst the action of the spring 19,- one end of which is secured to the carrier and. the other to the segment rod 20 and it may be locked inthis position by turning the same so that the .peg' 21 on the rod engages the lateral slot 22 in the carrier. It is thus possible to move the carrier from one end of the feed screw to the other or to adjust its position thereon as desired. 1 Around the drum is placed a removable shell 23 made of paper'or anysuitable material u on which is printed a scale com: rising perip eral lines to indicate hours an axial lines to indicate minutes. Theaxial minute lines shown in Figs. 2 and 3 are so spaced as to divide the circumference of the drum into 59 parts while the rotation of the drfim is so calculated that the circumference moves past the point 17 at the rate of one division a minute, or 1 revolutions per hour. Dur ing the revolution of. the drum the recorder arm 16, actuated by the feed screw 14, moves longitudinally one s ace,f ollowin'g the peripheral hour line who is arrangedspirally on the scale.

If the .hours and minutes are printed on the scale as indicated in the drawings, it will be readily seen that the time consumed in the journey may be readil ascertained, and

even the time ofdaytol if the recorder arm is properl placed upon the drum at the beo e run., The recorder arm 16 and its carrier 15 are arranged on the feed screw 14 so as to have a.

limited free angular movement. The lower portion rests against a finger bar 23 carried y an elbow lever 24, 1pivoted on the axis 2 5'.

This elbow lever. is-he (1 up against a stop 26 by a suitably arranged-spring, as for instance the coil spring 27 surrounding the axis 25. When the apparatus is in this. position the point 17 is in proximity to but not touching; the scale on the face of the drum.

To secure a record, the elbow lever is drawn down against the action of the sprin 27 by means of a rod 28 pivotally connecte thereto at one end and atthe other end, to

one of the arms of the" pivoted lever 29. The

other end of this lever 29 is subjected to the action of the stops 30 on the wheel 31,- which 29, flies back against the stop pricks of the point is actuated in any suitable-way from a mov ing part of the vehicle, as for instance by a train of gear wheels operated from the rear shaft (Fig. -4)' or by a bevel gear shaft (Fig. 5)., As soon as the stop 30 releases the end of the lever 29, the lever 24 which has been drawn down by the movement of the lever 26 under the influence of the spring 27. he impetus of this return stroke throws the arm 16 free of its rest upon the finger bar 23 and the point 17 makes a record u on the scale. When the point 17 is mere y a pricking point as shown, it is advisable to arrange a rubber cushion 31 beneath the scale so that the point shall not be dulled in making the rec ord. It may of course be adjusted 0': removed for sharpening at any time by the manipulation of the securing screw 32.

in illustration of the manner in which a record is made, su pose the wheel 31 is provided with a sing e stop and revolves once for every 250 meters traveled. If the speed of the vehicle doesvnot exceed 500 meters per minute, it follows that there will be two 17 in a single axial division on the scale. An increase or decrease of speed, is followed by an increase or decrease in the number of pricks per division as shown,

(Fig. 3) since the drum is maintained constant by the clock mechanism, While the speed of revolution of the wheel 31 varies with the speed of the vehicle.

I claim as my invention:

In a speedometer, a recording drum, spring actuated gearing located within the same for driving said drum at a constant speed, a scale provided with time divisions extending substantially the length of said drum, a pivoted marker. and means for traveling the same lengthwise of the drum at a s eed correlated to that of the rotation of the rum, a spring actuated pivoted rest supporting said marker out of contact with said drum, a stop against which said rest is held by the action of its spring and means in connection with a moving part of the machine the speed of which is to be ascertained for moving said rest against the tension of its spring.

In testimony whereof I have signed my name to this specification, in the presence of two subscribing witnesses.

CHARLES A. JACQUES.

Witnesses:

WALTER ABBE, WILLIAM ABBE.

speed of rotation of the 

